Rivet construction



Jan. 26 1926. 1,570,715

E. B. .STIMPSON RIVET CONSTRUCTION Filed Sept. 28. 1921 2 Sheets-Sheet 1z invent-oz I 351 Gum/neg Jan. 26,1926. 1,570,715

E. B. STIMPSON RIVBT CONSTRUCTION Filed Sept. 28, 1921 2 Sheets-Sheet 2Patented Jan. 26, 1926.

UNITED .STAIATES EDWIN B. STIMPSON, OF BROOKLYN, NEW YORK, ASSIGNOR T0EDWIN B. STIMPSON I COMPANY, OF- BROOKLYN, NEW YORK.

RIVET CONSTRUCTION.

Application filed September 28,1921. Serial No. 503,863.

material.

These and other objects are attained in the constructions illustrated inthe accompanying drawings which show a few of the possible forms theinvention may take.

Figures 1, 2 and 3 are side and sectional views respectivelyillustrating .a form of slotted member forming one part of the rivet.

Figures 4 and 5 are side views of another 1 form of slotted member,differing from the first in that the slot is of constant instead ofvarying or tapered width.

Figures Sand 7 are side views of the other cooperatingmember of thisstyle ofrivet.

Figure 8, is a broken sectional view illustrating the two members of therivet as set in the material or parts which they are to hold together. p

Figure 9 is a showing in side elevation and plan of a pin type of stud,and

Figure 10 is a broken section illustrating the cooperation of the samewith the split member of the rivet.

Figure 11 is a side view of this rivet in its completed state and Figure12' is a section 011 line 12-12 of Figure 11.

Figures 13 and 14 are side views illustrating the cooperating partsofanother and somewhat simpler style of rivet.

Figure 15 is a side view showing the parts of this style of rivet intheir clinched condition.

Figure 16 is a similar view illustrative of a modification adapted toturn the points in opposite directions instead of in the same direction,as in Figure 15.

In the forms of the invention disclosed in Figures 1 to 12, one memberof the rivet is in the form of a headed stud 17 having a substantiallycylindrical shank, split or slotted as indicated at 18 to provide theprongs 19, 20. a This slot may be either tapering as shown in Figure 1,or have parallel sides as indicated in Figure 4;, the advantage of thefirst beingthat a wedging eflect is ob-' tained, resulting in a greaterspreading of the prongs.

At the inner end of the slot in the shank, a shoulder 21 is left,inclined from one side to the opposite side of the shank and arrangedpreferably at a suliicient angle to provide agood chisel point at theouter terminus of the same for cutting cleanly intothe material, asindicated particularly at 22 in Figure 3.

Cooperating with the split stud is a second headed stud member 23 havingthe intermediate portion of the shank thereof of reduced thickness, asindicated at 24 to enter the slot between the prongs of the firstmember. At the base or juncture of the reduced portion with the main,full size part of the shank, there are provided shoulders 25 inclined,as in the caseof' the first stud, at a relatively sharp angle and extending along the line of incline from one side to the opposite side ofthe shank, so as to provide .an inclined wedging face equal in extent tothe full width or' thickness of the shank. These inclined shoulders 25'-may extend the same or opposite directions at the opposite sides of theshank so as to deflect the prongs 19, 20 of the first member either inthe same or in opposite directions.

The double and the single prongs of the two studs are preferably pointedor sharpened somewhat, as I have indicated at 26, so as to more readilypenetrate the material and so as to turn readily over the inclinedshoulders, regardless of which way the shoulders may be faced in puttingthe two parts of the rivet together.

In the form of the invention shown in Figures 9 to 12, the second member27 of the rivet has a concentrically reduced shank por tion 28 with anannular inclined shoulder The form of my invention shown in Figs. 9 to12 is shown and claimed in a divisional application which has maturedinto Patent No. 1,511,688, dated October 14, 1924.

In the form of the invention disclosed in the remaining views, each ofthe cooperating stud members 31 and 32 is reduced at one side thereof,for approximately half its thickness, to leave a single prong 33 havingat the base thereof a shoulder 34 inclined as before across the fullwidth of the shank. The shoulders of the companion studs may be inclinedin reverse directions or parallel, as indicated in Figures and 16respective ly so as to deflect the points either both to one side or toopposite sides of the rivet body. Another distinction in this lastdescribed form of rivet is that the shanks of the cooperating membersare of rectangular shape, substantially square in cross section, insteadof round as in the preceding forms.

What I claim is:

1. A rivet comprising cooperating headed studs having shanks cut away toprovide prongs having flat contacting faces and each having an inclinedbending, shoulder at the base of a prong the face of the shoulder beingperpendicular to the fiat contacting face of the shank, and arrangedwith the inclined length thereof extending the full thickness of theshank across from one side to the opposite side thereof.

2. A rivet stud slotted to provide prongs and having a single bendingshoulder having a plane surface extending transversely and diagonallywith respect to the longitudinal axis of the stud and extending betweenthe prongs across the shank from one side entirely to the opposite sidethereof and a companion stud having a portion reduced in thickness toenter between the prongs of the first stud and inclined shoulders at thebase of the reduced portion to turn the prongs of the first stud.

3. A rivet stud slotted to provide prongs and having a single bendingshoulder having a plane surface extending transversely and diagonallywith respect to the longitudinal axis of the stud and extending betweenthe prongs across the shank from one side entirely to the opposite sidethereof and a companion stud having a portion reduced in thickness toenter between the prongs of the first stud and a shoulder at the base ofsaid reduced portion extending on an incline across the full width ofthe stud.

A two piece rivet comprising companion studs having cut away portionsand shoulders at the bases of said cut away portions extendingdiagonally across the full width of the studs.

5. A two piece rivet comprising companion studs having shanks with cutaway portions and shoulders at the bases of said cut away portions andwith a shoulder on one of said members extending diagonally the fullwidth of the shank of said member.

6. A rivet having a shank portion reduced in thickness to provide aclinching prong, the base end of the prong terminating in a shoulderextending diagonally across the shank to form an acute angle with onelateral margin thereof.

7. A rivet having the outer end of its shank portion reduced inthickness to form a clinching prong, and the base end of the prongterminating in a shoulder extending diagonally across the shank at aninclination that provides a cutting edge at a lateral margin thereof.

8. A two piece rivet comprising a stud having a shank slotted to providedouble clinching prongs, and a stud having a single prong shank adaptedto be received between the double prongs of the other stud, and inclinedportions on the studs for clinching the ends of the prongs.

In testimony whereof I affix my signature.

EDWIN B. STIMPSON.

